Finding the Fourth Proportional to 22,429.29, 33,644.85 and 8,387.89

Step by Step Solution

1. Step 1: Write the proportion equation
   22,429.29 : 33,644.85 = 8,387.89 : x
2. Step 2: Convert to fraction form
   22,429.29/33,644.85 = 8,387.89/x
3. Step 3: Cross multiply
   22,429.29x = 33,644.85 × 8,387.89
4. Step 4: Simplify right side
   22,429.29x = 282,209,300.87
5. Step 5: Solve for x
   x = 282,209,300.87/22,429.29
6. Step 6: Final answer
   x = 12,582.18